Bug 426233

Summary:	qt 5.15 upgrade breaks sddm and desktop access
Product:	[KDE Neon] neon	Reporter:	David R. Bergstein <david.r.bergstein>
Component:	general	Assignee:	Neon Bugs <neon-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	jr, neon-bugs, r.griff444, sitter
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description David R. Bergstein 2020-09-06 04:05:48 UTC

SUMMARY


STEPS TO REPRODUCE
1. Update qt and libqt packages to version 5.15 from 5.14.2+dfsg-0+xneon+20.04+focal+build11
2. Reboot
3. Observe black screen with cursor in place of sddm login 

OBSERVED RESULT
Graphical desktop is inaccessible.

EXPECTED RESULT
Normal login screen (sddm) and access to desktop login.

SOFTWARE/OS VERSIONS
Windows: N/A
macOS: N/A
Linux/KDE Plasma: 5.8.6-050806-generic
(available in About System)
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.73.0
Qt Version: 5.15

ADDITIONAL INFORMATION
I observed that in the current version of KDE neon Developer that qt 5.15 was not yet included.  Should this qt release have been tested there first?

Comment 1 Jonathan Riddell 2020-09-07 16:55:41 UTC

There's no qt 5.15 in the user archive

You might have the /release archive enabled, this is our staging area and should not be used unless you know what you are testing

Comment 2 David R. Bergstein 2020-09-07 17:04:22 UTC

I was an early adopter during trial upgrades to focal.  Hence it appears you are correct, as my neon.list file contains the following:

deb http://archive.neon.kde.org/release/ focal main
deb-src http://archive.neon.kde.org/release/ focal main

Should I change "release" to "user" in this file?

Comment 3 Robert Griffiths 2020-09-08 07:55:34 UTC

This is what the user totof (on Matrix) posted about the fix yesterday:
"for information : fix my issue was ... change the neon.list files by replacing release by user, then apt update then downgrade qt to 5.14.2 then apt install neon-desktop for reinstalling some missing packages as sddm
and yipi it works again"